hi guys, ive been on the road for about a month now, i live in a private area which is gated, i park my car right outside my house and up to now i haven't had any problems.however today i came out of my house to see my car had moved forward by some distance, i thought maybe my handbrake was down, i checked and it was not, i then go to the back of the car to push it just to see if my handbrake had failed, however it wasn't moving,then i notice a dent, quite large large one and cracking on the lower part of the bodywork of the rear.so someone has obviously hit me quite hard. My house is at the end of a row, and my neighbors have been gone for a week with their car so i know it cant have been them.I checked all the other cars in my area and have found a mini cooper with denting and cracks that could suggest it hit me.Now the damage is just cosmetic , the car still drives and the rear lights work etc. i would like to know the procedure i should go through, should i contact police or should i contact my insurance company, or should i approach the other drivers in my area and question them.Its just a bit annoying that someone would do that and not even leave a note, i know the damage will probably be like 100 pounds but still quite fustrating.